mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-26 20:47:08 +08:00
112 lines
2.8 KiB
C++
112 lines
2.8 KiB
C++
/*
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* Copyright (c) 2016-present The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/ZLMediaKit/ZLMediaKit).
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*
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* Use of this source code is governed by MIT-like license that can be found in the
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* LICENSE file in the root of the source tree. All contributing project authors
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* may be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef ZLMEDIAKIT_MPEG_H
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#define ZLMEDIAKIT_MPEG_H
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#if defined(ENABLE_HLS) || defined(ENABLE_RTPPROXY)
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#include <cstdio>
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#include <cstdint>
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#include <unordered_map>
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#include "Extension/Frame.h"
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#include "Extension/Track.h"
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#include "Common/MediaSink.h"
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#include "Util/ResourcePool.h"
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namespace mediakit {
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//该类用于产生MPEG-TS/MPEG-PS
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class MpegMuxer : public MediaSinkInterface {
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public:
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MpegMuxer(bool is_ps = false);
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~MpegMuxer() override;
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/**
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* 添加音视频轨道
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*/
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bool addTrack(const Track::Ptr &track) override;
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/**
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* 重置音视频轨道
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*/
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void resetTracks() override;
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/**
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* 输入帧数据
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*/
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bool inputFrame(const Frame::Ptr &frame) override;
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/**
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* 刷新输出所有frame缓存
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*/
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void flush() override;
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protected:
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/**
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* 输出ts/ps数据回调
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* @param buffer ts/ps数据包
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* @param timestamp 时间戳，单位毫秒
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* @param key_pos 是否为关键帧的第一个ts/ps包，用于确保ts切片第一帧为关键帧
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*/
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virtual void onWrite(std::shared_ptr<toolkit::Buffer> buffer, uint64_t timestamp, bool key_pos) = 0;
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private:
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void createContext();
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void releaseContext();
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void onWrite_l(const void *packet, size_t bytes);
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void flushCache();
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private:
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bool _is_ps = false;
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bool _have_video = false;
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bool _key_pos = false;
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uint32_t _max_cache_size = 0;
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uint64_t _timestamp = 0;
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struct mpeg_muxer_t *_context = nullptr;
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class FrameMergerImp : public FrameMerger {
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public:
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FrameMergerImp() : FrameMerger(FrameMerger::h264_prefix) {}
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};
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struct MP4Track {
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int track_id = -1;
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FrameMergerImp merger;
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};
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std::unordered_map<int, MP4Track> _tracks;
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toolkit::BufferRaw::Ptr _current_buffer;
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toolkit::ResourcePool<toolkit::BufferRaw> _buffer_pool;
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};
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}//mediakit
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#else
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#include "Common/MediaSink.h"
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namespace mediakit {
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class MpegMuxer : public MediaSinkInterface {
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public:
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MpegMuxer(bool is_ps = false) {}
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bool addTrack(const Track::Ptr &track) override { return false; }
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void resetTracks() override {}
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bool inputFrame(const Frame::Ptr &frame) override { return false; }
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protected:
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virtual void onWrite(std::shared_ptr<toolkit::Buffer> buffer, uint64_t timestamp, bool key_pos) = 0;
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};
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}//namespace mediakit
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#endif
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#endif //ZLMEDIAKIT_MPEG_H
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